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MAX5090A/B/C Datasheet(PDF) 6 Page - Maxim Integrated Products

Part # MAX5090A/B/C
Description  2A, 76V, High-Efficiency MAXPower Step-Down DC-DC Converters
PDF  17 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX5090A/B/C Datasheet(HTML) 6 Page - Maxim Integrated Products

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(VIN = 12V, VON/OFF =12V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C. See the Typical
Operating Circuit, if applicable.)
MAX5090 toc19
LOAD-TRANSIENT RESPONSE
(MAX5090AATE)
VOUT = 3.3V
A: VOUT, 200mV/div, AC-COUPLED
B: IOUT, 500mA/div, 0.1A TO 1A
400µs/div
A
B
LX WAVEFORMS
(MAX5090AATE)
MAX5090 toc20
VOUT = 3.3V
A
B
A: SWITCH VOLTAGE (LX PIN), 20mV/div (VIN = 48V)
B: INDUCTOR CURRENT, 2A/div (I0 = 2A)
4µs/div
0
MAX5090 toc21
LX WAVEFORMS
(MAX5090AATE)
VOUT = 3.3V
A: SWITCH VOLTAGE, 20V/div (VIN = 48V)
B: INDUCTOR CURRENT, 200mA/div (I0 = 75mA)
4µs/div
A
B
MAX5090 toc22
LX WAVEFORM
(MAX5090AATE)
VOUT = 3.3V
A: SWITCH VOLTAGE, 20V/div (VIN = 48V)
B: INDUCTOR CURRENT, 200mA/div (IOUT = 0)
4µs/div
A
B
MAX5090 toc23
STARTUP WAVEFORM
(IOUT = 0)
A: VON/OFF, 2V/div
B: VOUT, 1V/div
4ms/div
A
B
CSS = 0.047µF
MAX5090 toc24
STARTUP WAVEFORM
(IOUT = 2A)
A: VON/OFF, 2V/div
B: VOUT, 1V/div
4ms/div
A
B
CSS = 0.047µF
1.0
3.0
2.0
5.0
4.0
6.0
7.0
6.5
36
46
16
26
56
66
76
PEAK SWITCH CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
MAX5090AATE
VOUT = 3.3V
5% DROP IN VOUT
PULSED OUTPUT LOAD
MAX5090 toc26
SYNCHRONIZATION
fSYNC = 119kHz
SYNC
2V/div
LX
10V/div
2µs/div
MAX5090 toc27
fSYNC = 200kHz
SYNCHRONIZATION
1µs/div
SYNC
2V/div
LX
10V/div
MAX5090A/B/C
2A, 76V, High-Efficiency MAXPower
Step-Down DC-DC Converters
Maxim Integrated │ 6
www.maximintegrated.com
Typical Operating Characteristics (continued)



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